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It might be necessary to prevent the virtual mapping creation for a requested memory region. For instance there is a "no-map" property indicating exactly this feature. In this case we need to not only reserve the specified region by pretending it doesn't exist in the memory space, but completely remove the range from system just by removing it from memblock. The same way it's done in default early_init_dt_reserve_memory_arch() method. Signed-off-by: Serge Semin <fancer.lancer@gmail.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Matt Redfearn <matt.redfearn@mips.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Thomas Bogendoerfer <tbogendoerfer@suse.de> Cc: Huacai Chen <chenhc@lemote.com> Cc: Stefan Agner <stefan@agner.ch> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: Juergen Gross <jgross@suse.com> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org |
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